You will need:
Your child should be old enough and possess certain skills. More on that in the next step.
The collection bucket should be very easy to remove from the top. It should not stick or require sliding in from the back.
The use of which is obvious.
Available in many places, though many are rather poorly made and leak like a sieve. Still, if you can get water into the doll through the mouth and then back out from the nether regions, it will suffice.
- Underwear to fit the child
Regular "big kid" underwear, not pullups. It should fit a little loosely, definitely not too tightly. You'll probably need several pairs.
Your child will have accidents. This training method uses those accidents to correct the behavior. It also teaches the child how to handle those accidents on his own.
- Liquids (juice, water, lemonade)
The more your child drinks, the more frequently he'll need to urinate, and that's vital to this training.
- Salty snacks (pretzels, chips, nuts)
The snacks are used as rewards and motivation in part of the training. Salty snacks make the child thirsty, so he drinks more, so he needs to urinate more, so you have more training opportunities.
List of about 10 important people to your child. Mom and Dad, older siblings, other relatives, neighbors, or teachers. They should be toilet trained themselves already, so don't pick peers. They should be people the child knows and loves, not someone who intimidates him. One or two fictional characters might also make the list - Cinderella and Belle were on ours.